Spring of Rainbows
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Template:Location-infobox The Spring of Rainbows is a location in Paper Mario: The Origami King, one of the five hot springs found at Shangri-Spa. This is by far the most exclusive and somewhat secluded spring at the resort, requiring Mario to use all four of the other springs and fill out a Stamp Card before earning the Spring of Rainbows - VIP, his ticket into the spring.
The Spring of Rainbows must be visited to restore Bowser Jr.'s colors as a side effect of using the Spring of Jungle Mist. The actual entrance into the spring is down a set of stairs west of the plaza. Shy Guys Finish Last takes place here. Additionally, there are no Toads to be rescued here, and very few other collectibles.
History
After filling out the Stamp Card, Mario must return to the front desk and speak with the receptionist. As a reward, he is given the Spring of Rainbows - VIP, used to enter the spring. Mario, Olivia, Bowser Jr. and Kamek must head to the plaza and find a small path to the west, where there is a set of stairs. Walking down these stairs, Mario is asked for his pass. Once he gives up the ticket, he may enter the spring. If Mario tries to give away anything else as a pass, he is declined.
After crossing a windy cavern, Mario, Olivia, Kamek and Bowser Jr. must enter a suspiciously dark cave, with seemingly nothing more than a sign in the center. However, reading it reveals the cave to be the set for a hot new game show, Shy Guys Finish Last. Mario must compete in the show to be granted access to the actual spring, making it all the more exclusive. Mario is also able to go for a perfect game and/or a Sudden Death round, although he only needs to score 100 points to be able to use the spring. After using the spring, Bowser Jr. gets his colors back, rejuvenating both him and his Junior Clown Car. Now functioning, Bowser Jr. is able to take them directly to Boss Sumo Bro.
Layout
Surprisingly, the first area of the spring is a flat, narrow cavern section. At the start is a Toad who welcomes Mario and his friends to the spring. Nearby, there is a sign, a Not-Bottomless Hole, and an orbiting Fuzzy. There are quite a few steams spouts in the ground and wall serving to slow Mario down. After the first Fuzzy is another Not-Bottomless Hole in the wall. Just before a large steam spout is a Rocky Wrench. This spout pushes a flat platform, taking Mario a bit higher. To the left, there is a crack in the wall Mario can hammer to open a tunnel. There is also a stalactite nearby with a crack Mario is able to hammer to block off one of the smaller spouts. This raises the pressure of the larger spout, allowing Mario to get a bit higher up. To the left, the tunnel leads to two more stalactites Mario must hammer down to push the large steam spout all the way through, allowing him to reach a small niche with a giant coin and a treasure chest containing a MAX UP Heart, giving Mario ten additional HP. Heading off to the right, Mario exits the cavern to reach the next section, outdoors.
Here, there is a Warp Pipe, although the other side is blocked off, preventing a shortcut. In this next section, Mario must walk in front of a rope and cling on at certain times to avoid a strong gust knocking him off. Notably, during this section, the player is not able to press 
to ask Olivia for advice or access the menu. Along the way, there are a few gaps Mario is able to jump over and a ? Block he may strike to receive a bag of confetti. There is a small alcove between these sections giving Mario a moment of safety. This next section introduces steam spouts in the wall and orbiting Fuzzies. Between the second and last sections, there is a ? Block containing a giant coin. This last section has no obstacles and is a simple walk around a curve. At the end of these sections is the other end of the pipe, a Save Block, and the entrance to the Shy Guys Finish Last set. Below this is the true Spring of Rainbows - as it suggests, it is a spring of relaxing colors. Not only is it able to completely restore Mario's HP, it restores Bowser Jr.'s color and energy. Behind the spring is a Not-Bottomless Hole serving as the door to a coffee shop.
Enemies
Not-Bottomless Holes
| There is a Not-Bottomless Hole in the wall at the start of the cavern section. | 
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| There is a Not-Bottomless Hole in the wall near the start of the cavern section, right after the first Fuzzy. | 
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| There is a Not-Bottomless Hole serving as the door to a coffee shop behind the spring. | 
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Collectible Treasures
| Collectible Treasure #108: Sudden Death Cannon must be collected by completing the Sudden Death round in Shy Guys Finish Last. | File:SpringofRainbowsCollectibleTreasure.png |
? Blocks
| Along the first windy path is a ? Block containing a bag of confetti. | File:SpringofRainbowsBlockA.jpg |
| Between the second and last windy paths is a ? Block containing a giant coin. | File:SpringofRainbowsBlockC.jpg |
